I have T-Mobile and travel for work frequently. A couple years ago I traveled to one of the largest metro areas in Iowa, only to get off the plane and have my T

I have T-Mobile and travel for work frequently. A couple years ago I traveled to one of the largest metro areas in Iowa, only to get off the plane and have my TMo phone tell me that there was no service whatsoever. After a bit of research, I found out that TMo did not have any official coverage in the entire state of Iowa, and only had roaming coverage available through a partnership with Iowa Wireless (I think it's different now and there is actual coverage available in IA). It ended up being fine (roaming was more than enough for my usage), but it did initially remind me of the feeling when I step off the plane in a foreign country and have to wait to find a WiFi hotspot to be connected again. It certainly wasn't what I expected when traveling to an area that's only ~200 miles away from one of the US's largest cities (Chicago). edit to add: Ironically, TMobile has free roaming + data coverage in almost every single country around the world, which makes it seem a bit silly that I can take my TMo phone to rural Indonesia and get data service (which I have done, with that same phone and TMo plan) but struggle to get it in a place like metropolitan Iowa...